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o_status_controller.ex
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# Pleroma: A lightweight social networking server
# Copyright © 2017-2022 Pleroma Authors <https://pleroma.social/>
# SPDX-License-Identifier: AGPL-3.0-only
defmodule Pleroma.Web.OStatus.OStatusController do
use Pleroma.Web, :controller
alias Pleroma.Activity
alias Pleroma.Object
alias Pleroma.User
alias Pleroma.Web.ActivityPub.ActivityPubController
alias Pleroma.Web.ActivityPub.Visibility
alias Pleroma.Web.Endpoint
alias Pleroma.Web.Fallback.RedirectController
alias Pleroma.Web.Metadata.PlayerView
alias Pleroma.Web.Plugs.RateLimiter
alias Pleroma.Web.Router
plug(
RateLimiter,
[name: :ap_routes, params: ["uuid"]] when action in [:object, :activity]
)
plug(
Pleroma.Web.Plugs.SetFormatPlug
when action in [:object, :activity, :notice]
)
action_fallback(:errors)
def object(%{assigns: %{format: format}} = conn, _params)
when format in ["json", "activity+json"] do
ActivityPubController.call(conn, :object)
end
def object(conn, _params) do
with id <- Endpoint.url() <> conn.request_path,
{_, %Activity{} = activity} <-
{:activity, Activity.get_create_by_object_ap_id_with_object(id)},
{_, true} <- {:public?, Visibility.public?(activity)} do
redirect(conn, to: "/notice/#{activity.id}")
else
reason when reason in [{:public?, false}, {:activity, nil}] ->
{:error, :not_found}
e ->
e
end
end
def activity(%{assigns: %{format: format}} = conn, _params)
when format in ["json", "activity+json"] do
ActivityPubController.call(conn, :activity)
end
def activity(conn, _params) do
with id <- Endpoint.url() <> conn.request_path,
{_, %Activity{} = activity} <- {:activity, Activity.normalize(id)},
{_, true} <- {:public?, Visibility.public?(activity)} do
redirect(conn, to: "/notice/#{activity.id}")
else
reason when reason in [{:public?, false}, {:activity, nil}] ->
{:error, :not_found}
e ->
e
end
end
def notice(%{assigns: %{format: format}} = conn, %{"id" => id}) do
with {_, %Activity{} = activity} <- {:activity, Activity.get_by_id_with_object(id)},
{_, true} <- {:public?, Visibility.public?(activity)},
%User{} = user <- User.get_cached_by_ap_id(activity.data["actor"]) do
cond do
format in ["json", "activity+json"] ->
%{data: %{"id" => redirect_url}} = Object.normalize(activity, fetch: false)
redirect(conn, external: redirect_url)
activity.data["type"] == "Create" ->
%Object{} = object = Object.normalize(activity, fetch: false)
RedirectController.redirector_with_meta(
conn,
%{
activity_id: activity.id,
object: object,
url: Router.Helpers.o_status_url(Endpoint, :notice, activity.id),
user: user
}
)
true ->
RedirectController.redirector(conn, nil)
end
else
reason when reason in [{:public?, false}, {:activity, nil}] ->
conn
|> put_status(404)
|> RedirectController.redirector(nil, 404)
e ->
e
end
end
# Returns an HTML embedded <audio> or <video> player suitable for embed iframes.
def notice_player(conn, %{"id" => id}) do
with %Activity{data: %{"type" => "Create"}} = activity <- Activity.get_by_id_with_object(id),
true <- Visibility.public?(activity),
{_, true} <- {:visible?, Visibility.visible_for_user?(activity, _reading_user = nil)},
%Object{} = object <- Object.normalize(activity, fetch: false),
%{data: %{"attachment" => [%{"url" => [url | _]} | _]}} <- object,
true <- String.starts_with?(url["mediaType"], ["audio", "video"]) do
conn
|> put_resp_header("x-frame-options", "ALLOW")
|> put_resp_header(
"content-security-policy",
"default-src 'none';style-src 'self' 'unsafe-inline';img-src 'self' data: https:; media-src 'self' https:;"
)
|> put_view(PlayerView)
|> render("player.html", url)
else
_error ->
conn
|> put_status(404)
|> RedirectController.redirector(nil, 404)
end
end
defp errors(conn, {:error, :not_found}) do
render_error(conn, :not_found, "Not found")
end
defp errors(conn, {:fetch_user, nil}), do: errors(conn, {:error, :not_found})
defp errors(conn, _) do
render_error(conn, :internal_server_error, "Something went wrong")
end
end

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